Home / 39,693.42-54,773.91-21,785.58

Finding the Fourth Proportional to 39,693.42, 54,773.91 and 21,785.58

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Solution

The fourth proportional to 39,693.42, 54,773.91 and 21,785.58 is: 30,062.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,693.42 : 54,773.91 = 21,785.58 : x
  2. Step 2: Convert to fraction form
    39,693.42/54,773.91 = 21,785.58/x
  3. Step 3: Cross multiply
    39,693.42x = 54,773.91 × 21,785.58
  4. Step 4: Simplify right side
    39,693.42x = 1,193,281,398.22
  5. Step 5: Solve for x
    x = 1,193,281,398.22/39,693.42
  6. Step 6: Final answer
    x = 30,062.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.